Question

look at this graph: write the equation of the line.

Explanation:

Step1: Identify line type

The line is vertical.

Step2: Recall vertical - line equation

The equation of a vertical line is of the form $x = a$, where $a$ is the $x$ - coordinate of any point on the line.

Step3: Determine the $x$ - value

The line passes through $x = 50$, so the equation is $x=50$.

Answer:

$x = 50$